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JP6150989B2 - Hydraulic control device for automatic transmission - Google Patents

Hydraulic control device for automatic transmission Download PDF

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Publication number
JP6150989B2
JP6150989B2 JP2012145769A JP2012145769A JP6150989B2 JP 6150989 B2 JP6150989 B2 JP 6150989B2 JP 2012145769 A JP2012145769 A JP 2012145769A JP 2012145769 A JP2012145769 A JP 2012145769A JP 6150989 B2 JP6150989 B2 JP 6150989B2
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oil
pressure
flow path
oil pump
low
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JP2013113439A (en
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眞 榮 黄
眞 榮 黄
世 煥 趙
世 煥 趙
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Hyundai Motor Co
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Hyundai Motor Co
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0021—Generation or control of line pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4008—Control of circuit pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/431—Pump capacity control by electro-hydraulic control means, e.g. using solenoid valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0021—Generation or control of line pressure
    • F16H2061/0037—Generation or control of line pressure characterised by controlled fluid supply to lubrication circuits of the gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0021—Generation or control of line pressure
    • F16H61/0025—Supply of control fluid; Pumps therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/85986—Pumped fluid control
    • Y10T137/86002—Fluid pressure responsive

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Description

本発明は、自動変速機の油圧制御装置に係り、より詳しくは、二つのオイルポンプが配備された自動変速機の油圧制御装置において、高圧部の油圧を低圧部の油圧に対して優先的に目標油圧に到達させる自動変速機の油圧制御装置に関する。   The present invention relates to a hydraulic control device for an automatic transmission, and more particularly, in a hydraulic control device for an automatic transmission provided with two oil pumps, the hydraulic pressure in the high pressure portion is given priority over the hydraulic pressure in the low pressure portion. The present invention relates to a hydraulic control device for an automatic transmission that reaches a target hydraulic pressure.

一般に、自動車の自動変速機はトルクコンバータ及びパワートレインを含む。また、パワートレインはトルクコンバータと連結されて多段変速を実現する。さらに、このような自動変速機に作動油圧を提供するための電動式オイルポンプ（Ｅｌｅｃｔｒｉｃ Ｏｉｌ Ｐｕｍｐ）、及び自動変速機の作動を制御するためのＴＣＵ（Ｔｒａｎｓｍｉｓｓｉｏｎ ＣｏｎｔｒｏｌＵｎｉｔ）が配備される。
最近の車両には、燃費の改善のために二つのオイルポンプが配備された自動変速機の油圧制御装置が適用されている。このような二つのオイルポンプが配備された自動変速機の油圧制御装置では、オイルタンクから供給されたオイルが二つのオイルポンプを順次に経由しながら昇圧する。また、一つのオイルポンプを経由したオイルは低圧部を形成させ、他の一つのオイルポンプをさらに経由したオイルは高圧部を形成させる。さらに、低圧部のオイルはトルクコンバータ及び潤滑部に供給され、高圧部のオイルはパワートレインに供給されて、ブレーキ及びクラッチを作動させる（例えば、特許文献１を参照）。 In general, an automatic transmission of an automobile includes a torque converter and a power train. In addition, the power train is connected to a torque converter to realize multi-stage speed change. Furthermore, an electric oil pump (Electric Oil Pump) for providing the hydraulic pressure to such an automatic transmission and a TCU (Transmission Control Unit) for controlling the operation of the automatic transmission are provided.
A recent vehicle employs a hydraulic control device for an automatic transmission in which two oil pumps are provided for improving fuel efficiency. In such a hydraulic control device for an automatic transmission equipped with two oil pumps, the oil supplied from the oil tank boosts the pressure while sequentially passing through the two oil pumps. Further, the oil passing through one oil pump forms a low pressure part, and the oil further passing through another oil pump forms a high pressure part. Further, the oil in the low pressure part is supplied to the torque converter and the lubrication part, and the oil in the high pressure part is supplied to the power train to operate the brake and the clutch (see, for example, Patent Document 1).

一方、二つのオイルポンプが配備された自動変速機の油圧制御装置では、低圧部に油圧を供給させるために高圧部の油圧が瞬間的に低下する時、ブレーキ及びクラッチに負荷が発生し、耐久性が低下する問題がある。   On the other hand, in an automatic transmission hydraulic control system equipped with two oil pumps, when the hydraulic pressure in the high pressure section drops momentarily in order to supply the hydraulic pressure to the low pressure section, a load is generated on the brake and clutch, resulting in durability. There is a problem that the performance decreases.

特開平０５−０３９８３８号公報JP 05-039838 A

本発明は上記の問題を解決するためになされたものであって、その目的とするところは、二つのオイルポンプが配備された自動変速機の油圧制御装置において、高圧部の油圧を低圧部の油圧に対して優先的に目標油圧に到達させる自動変速機の油圧制御装置を提供することにある。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a hydraulic control device for an automatic transmission in which two oil pumps are provided. An object of the present invention is to provide a hydraulic control device for an automatic transmission that preferentially reaches a target hydraulic pressure with respect to the hydraulic pressure.

上記目的を達成するためになされた本発明の自動変速機の油圧制御装置は、オイルが貯蔵されるオイルタンク、オイルタンクに連結されてオイルの供給を受け、低圧を形成する第１オイルポンプ、第１オイルポンプに連結されて低圧の供給を受け、高圧を形成する第２オイルポンプ、第１オイルポンプから低圧の供給を受けるトルクコンバータ及び潤滑部、第２オイルポンプから高圧の供給を受けるパワートレイン、第１オイルポンプとトルクコンバータ及び潤滑部との間に介在し、トルクコンバータ及び潤滑部に選択的にオイルを供給する流路切替バルブ、及びパワートレインに供給される油圧の一部を供給し、流路切替バルブを選択的に開閉させるフィードバックライン、を含むことを特徴とする。   In order to achieve the above object, a hydraulic control device for an automatic transmission according to the present invention includes: an oil tank that stores oil; a first oil pump that is connected to the oil tank and receives supply of oil to form a low pressure; A second oil pump connected to the first oil pump and receiving a low pressure to form a high pressure, a torque converter and a lubricating unit receiving a low pressure from the first oil pump, and a power receiving a high pressure from the second oil pump A part of the oil pressure supplied to the power train and the flow path switching valve that is interposed between the train, the first oil pump, the torque converter and the lubricating part, and selectively supplies oil to the torque converter and the lubricating part. And a feedback line for selectively opening and closing the flow path switching valve.

第１オイルポンプと流路切替バルブとの間に介在し、トルクコンバータ及び潤滑部に供給される作動圧を調節する第１レギュレーティングバルブ、及び第２オイルポンプとパワートレインとの間に介在し、パワートレインに供給される作動圧を調節する第２レギュレーティングバルブ、をさらに含むことができる。
第１レギュレーティングバルブ及び第２レギュレーティングバルブに制御圧を提供する可変制御ソレノイドバルブをさらに含むことができる。
第１オイルポンプ及び第２オイルポンプは電動式オイルポンプであることができる。 A first regulating valve that is interposed between the first oil pump and the flow path switching valve and that adjusts the operating pressure supplied to the torque converter and the lubrication unit, and is interposed between the second oil pump and the power train. And a second regulating valve that adjusts an operating pressure supplied to the power train.
A variable control solenoid valve that provides a control pressure to the first and second regulating valves may be further included.
The first oil pump and the second oil pump can be electric oil pumps.

第１オイルポンプと第２オイルポンプとを連結する流路から分岐して、第１レギュレーティングバルブに油圧を供給する第１低圧供給流路、第１レギュレーティングバルブを経由したオイルをトルクコンバータ及び潤滑部に選択的に供給する第２低圧供給流路、第１レギュレーティングバルブを経由したオイルをトルクコンバータ及び潤滑部に常時供給するオリフィス、第２低圧供給流路及びオリフィスを経由したオイルが統合されて、トルクコンバータ及び潤滑部に供給するように形成された第３低圧供給流路、第２オイルポンプからポンピングされたオイルを第２レギュレーティングバルブに供給する第１高圧供給流路、及び第２レギュレーティングバルブを経由したオイルをパワートレインに供給する第２高圧供給流路、をさらに含むことが好ましい。   A first low-pressure supply passage that branches off from a passage connecting the first oil pump and the second oil pump and supplies hydraulic pressure to the first regulating valve; and the oil that has passed through the first regulating valve is supplied to the torque converter and The second low-pressure supply channel that selectively supplies the lubrication part, the orifice that constantly supplies oil via the first regulating valve to the torque converter and the lubrication part, and the second low-pressure supply channel and oil that passes through the orifice are integrated. A third low-pressure supply passage formed to supply the torque converter and the lubrication unit, a first high-pressure supply passage for supplying oil pumped from the second oil pump to the second regulating valve, and 2 further includes a second high pressure supply passage for supplying oil via the regulating valve to the power train. Door is preferable.

第２低圧供給流路はオリフィスを迂回することができる。
流路切替バルブは第２低圧供給流路上に備えられることができる。
第２低圧供給流路は、流路切替バルブの開閉よって選択的に連結できる。
フィードバックラインは、第２高圧供給流路から分岐されて流路切替バルブと連結できる。
パワートレインに供給される作動圧が設定値以上である場合、作動圧の一部は、フィードバックラインを通してパワートレインに供給され、流路切替バルブが開放されることができる。 The second low pressure supply channel can bypass the orifice.
A flow path switching valve may be provided on the second low pressure supply flow path.
The second low-pressure supply channel can be selectively connected by opening and closing the channel switching valve.
The feedback line may be branched from the second high pressure supply flow path and connected to the flow path switching valve.
When the operating pressure supplied to the power train is equal to or higher than the set value, a part of the operating pressure is supplied to the power train through the feedback line, and the flow path switching valve can be opened.

本発明の自動変速機の油圧制御装置によれば、高圧部の油圧を低圧部の油圧に対して優先的に目標油圧に到達させることにより、低圧部に油圧を供給させることによって発生する高圧部の瞬間的な油圧低下を防止することができる。これにより、ブレーキ及びクラッチの耐久性を向上させることができる。   According to the hydraulic control device for an automatic transmission of the present invention, the high pressure portion generated by supplying the hydraulic pressure to the low pressure portion by causing the hydraulic pressure of the high pressure portion to reach the target hydraulic pressure preferentially with respect to the hydraulic pressure of the low pressure portion. It is possible to prevent an instantaneous hydraulic pressure drop. Thereby, durability of a brake and a clutch can be improved.

本発明の実施例による流路切替バルブが閉鎖された自動変速機の油圧制御装置の構成図である。1 is a configuration diagram of a hydraulic control device for an automatic transmission with a flow path switching valve closed according to an embodiment of the present invention. 本発明の実施例による流路切替バルブが開放された自動変速機の油圧制御装置の構成図である。1 is a configuration diagram of a hydraulic control device for an automatic transmission in which a flow path switching valve is opened according to an embodiment of the present invention.

以下、本発明の好ましい実施例について、添付した図面に基づいて詳細に説明する。
図１は、本発明の実施例による流路切替バルブが閉鎖された自動変速機の油圧制御装置の構成図である。また、図２は、本発明の実施例による流路切替バルブが開放された自動変速機の油圧制御装置の構成図である。
図１及び図２に示したとおり、本発明の実施例に係る自動変速機の油圧制御装置１０は、パワートレイン３００、トルクコンバータ４００、潤滑部４５０、オイルタンク６００、第１オイルポンプ１００、第２オイルポンプ１５０、第１レギュレーティングバルブ２００、第２レギュレーティングバルブ２５０、可変制御ソレノイドバルブ５００、流路切替バルブ１２５、及びフィードバックライン１８０を含む。
パワートレイン３００は、エンジンの出力をホィールに伝達する装置であって、クラッチ、ブレーキ、変速機、推進軸、遊星ギヤセット、及び駆動軸などで構成される。このようなパワートレイン３００は一般的な自動変速機に備わる装置であり、当該技術分野で通常の知識を有する者（以下、当業者）にとって自明であるので、これに対する詳細な説明は省略する。 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a configuration diagram of a hydraulic control device for an automatic transmission in which a flow path switching valve is closed according to an embodiment of the present invention. FIG. 2 is a configuration diagram of a hydraulic control device for an automatic transmission in which a flow path switching valve is opened according to an embodiment of the present invention.
As shown in FIGS. 1 and 2, the hydraulic control apparatus 10 for an automatic transmission according to the embodiment of the present invention includes a power train 300, a torque converter 400, a lubrication unit 450, an oil tank 600, a first oil pump 100, 2 includes an oil pump 150, a first regulating valve 200, a second regulating valve 250, a variable control solenoid valve 500, a flow path switching valve 125, and a feedback line 180.
The power train 300 is a device that transmits engine output to a wheel, and includes a clutch, a brake, a transmission, a propulsion shaft, a planetary gear set, a drive shaft, and the like. Such a power train 300 is a device provided in a general automatic transmission, and is obvious to a person having ordinary knowledge in the technical field (hereinafter, a person skilled in the art), and thus a detailed description thereof will be omitted.

トルクコンバータ４００は、流体を使用して動力を伝達する装置であって、トルクを増幅させる機能を行う。このようなトルクコンバータ４００は一般的な自動変速機に備わる装置であり、当業者にとって自明であるので、これに対する詳細な説明は省略する。
潤滑部４５０は、エンジン（図示せず）及びパワートレイン３００等の駆動系を潤滑させるためにオイルを供給する。
オイルタンク６００には油圧制御装置１０を作動させる油圧を形成するためのオイルが貯蔵される。 The torque converter 400 is a device that transmits power using a fluid, and performs a function of amplifying torque. Such a torque converter 400 is a device provided in a general automatic transmission, and is obvious to those skilled in the art, and thus a detailed description thereof will be omitted.
The lubrication unit 450 supplies oil to lubricate a drive system such as an engine (not shown) and the power train 300.
The oil tank 600 stores oil for forming a hydraulic pressure for operating the hydraulic control device 10.

第１オイルポンプ１００は、オイルタンク６００のオイルをポンピングすることによって低圧部２０を形成する。また、第２オイルポンプ１５０は、第１オイルポンプ１００からポンピングされたオイルの供給を受けて、もう一度ポンピングすることによって高圧部３０を形成する。さらに、低圧部２０のオイルはトルクコンバータ４００及び潤滑部４５０に供給され、高圧部３０のオイルはパワートレイン３００に供給される。パワートレイン３００に供給された高圧部３０のオイルは、パワートレイン３００に配備されたクラッチ（図示せず）及びブレーキ（図示せず）を作動させるための油圧を形成する。一方、第１オイルポンプ１００及び第２オイルポンプ１５０は、モータ（図示せず）によって作動する電動式オイルポンプとすることができる。   The first oil pump 100 forms the low pressure part 20 by pumping the oil in the oil tank 600. The second oil pump 150 receives the supply of the pumped oil from the first oil pump 100 and pumps it again to form the high pressure unit 30. Further, the oil in the low pressure part 20 is supplied to the torque converter 400 and the lubrication part 450, and the oil in the high pressure part 30 is supplied to the power train 300. The oil in the high pressure unit 30 supplied to the power train 300 forms a hydraulic pressure for operating a clutch (not shown) and a brake (not shown) provided in the power train 300. Meanwhile, the first oil pump 100 and the second oil pump 150 can be electric oil pumps that are operated by a motor (not shown).

第１レギュレーティングバルブ２００は、第１オイルポンプ１００とトルクコンバータ４００及び潤滑部４５０との間に備わることによって、トルクコンバータ４００に供給される油圧を一定に維持する。つまり、第１オイルポンプ１００からポンピングされたオイルは、第１レギュレーティングバルブ２００を経てトルクコンバータ４００に供給される。
第２レギュレーティングバルブ２５０は、第２オイルポンプ１５０とパワートレイン３００との間に備えられ、パワートレイン３００に供給される油圧を一定に維持する。
つまり、第２オイルポンプ１５０からポンピングされたオイルは、第２レギュレーティングバルブ２５０を経てパワートレイン３００に供給される。 The first regulating valve 200 is provided between the first oil pump 100, the torque converter 400, and the lubrication unit 450, thereby maintaining a constant hydraulic pressure supplied to the torque converter 400. That is, the oil pumped from the first oil pump 100 is supplied to the torque converter 400 through the first regulating valve 200.
The second regulating valve 250 is provided between the second oil pump 150 and the power train 300, and maintains a constant hydraulic pressure supplied to the power train 300.
That is, the oil pumped from the second oil pump 150 is supplied to the power train 300 through the second regulating valve 250.

可変制御ソレノイドバルブ５００は、第１レギュレーティングバルブ２００及び第２レギュレーティングバルブ２５０の目標油圧を変更するために連結される。つまり、可変制御ソレノイドバルブ５００の制御圧によって目標油圧が変更可能である。
流路切替バルブ１２５はトルクコンバータ４００及び潤滑部４５０に選択的にオイルが供給されるように、第１レギュレーティングバルブ２００とトルクコンバータ４００及び潤滑部４５０との間に介在される。 The variable control solenoid valve 500 is connected to change the target hydraulic pressure of the first regulating valve 200 and the second regulating valve 250. That is, the target hydraulic pressure can be changed by the control pressure of the variable control solenoid valve 500.
The flow path switching valve 125 is interposed between the first regulating valve 200, the torque converter 400, and the lubrication unit 450 so that oil is selectively supplied to the torque converter 400 and the lubrication unit 450.

フィードバックライン１８０は、高圧部３０のオイルを流路切替バルブ１２５に選択的に供給する。つまり、フィードバックライン１８０は、流路切替バルブ１２５が選択的に開放されたとき、パワートレイン３００に供給される油圧の一部を流路切替バルブ１２５に供給する。また、パワートレイン３００に供給される作動圧が設定値以上である場合、高圧部３０から流路切替バルブ１２５にオイルを供給する。さらに、流路切替バルブ１２５は、高圧部３０からオイルの供給を受けることによって開放され、トルクコンバータ４００及び潤滑部４５０にオイルを供給する。
また、油圧制御装置１０は、第１低圧供給流路１１０、第２低圧供給流路１２０、オリフィス１３０、第３低圧供給流路１４０、第１高圧供給流路１６０、及び第２高圧供給流路１７０をさらに含む。 The feedback line 180 selectively supplies the oil of the high pressure unit 30 to the flow path switching valve 125. That is, the feedback line 180 supplies a part of the hydraulic pressure supplied to the power train 300 to the flow path switching valve 125 when the flow path switching valve 125 is selectively opened. When the operating pressure supplied to the power train 300 is equal to or higher than the set value, oil is supplied from the high pressure unit 30 to the flow path switching valve 125. Further, the flow path switching valve 125 is opened when oil is supplied from the high-pressure unit 30, and supplies oil to the torque converter 400 and the lubrication unit 450.
Further, the hydraulic control device 10 includes the first low-pressure supply channel 110, the second low-pressure supply channel 120, the orifice 130, the third low-pressure supply channel 140, the first high-pressure supply channel 160, and the second high-pressure supply channel. 170 is further included.

第１低圧供給流路１１０は、第１オイルポンプ１００と第２オイルポンプ１５０とを連結する流路から分岐して、第１レギュレーティングバルブ２００と連結する。つまり、第１オイルポンプ１００からポンピングされたオイルの一部は第２オイルポンプ１５０に供給され、他の一部は第１レギュレーティングバルブ２００に供給される。
第２低圧供給流路１２０は、第１レギュレーティングバルブ２００を経由したオイルが通過するように形成される。また、オリフィス１３０は、第２低圧供給流路１２０から分岐して形成される。さらに、第２低圧供給流路１２０はオリフィス１３０を迂回して形成される。
第２低圧供給流路１２０上には流路切替バルブ１２５が設置される。つまり、第２低圧供給流路１２０は、流路切替バルブ１２５の開閉によって、トルクコンバータ４００及び潤滑部４５０と選択的に連結する。一方、オリフィス１３０は断面積を減少させた通路であって、断面積に比べてその長さが比較的に短い通路をいう。このようなオリフィス１３０は、トルクコンバータ４００及び潤滑部４５０に最小限のオイルが常時供給されるように形成される。 The first low-pressure supply channel 110 is branched from a channel connecting the first oil pump 100 and the second oil pump 150 and is connected to the first regulating valve 200. That is, a part of the oil pumped from the first oil pump 100 is supplied to the second oil pump 150 and the other part is supplied to the first regulating valve 200.
The second low-pressure supply channel 120 is formed so that oil passing through the first regulating valve 200 passes therethrough. Further, the orifice 130 is formed by branching from the second low-pressure supply channel 120. Further, the second low pressure supply channel 120 is formed around the orifice 130.
A flow path switching valve 125 is installed on the second low pressure supply flow path 120. That is, the second low-pressure supply channel 120 is selectively connected to the torque converter 400 and the lubrication unit 450 by opening and closing the channel switching valve 125. On the other hand, the orifice 130 is a passage having a reduced cross-sectional area, and has a relatively short length compared to the cross-sectional area. Such an orifice 130 is formed such that a minimum amount of oil is constantly supplied to the torque converter 400 and the lubrication unit 450.

第３低圧供給流路１４０は、オリフィス１３０を迂回した第２低圧供給流路１２０とオリフィス１３０を経由したオイルが統合されるように形成される。つまり、第２低圧供給流路１２０及びオリフィス１３０を通過したオイルは、第３低圧供給流路１４０で統合されて、トルクコンバータ４００及び潤滑部４５０に供給される。また、第３低圧供給流路１４０は分岐して、トルクコンバータ４００及び潤滑部４５０にそれぞれオイルを供給する。
第１高圧供給流路１６０は、第２オイルポンプ１５０と第２レギュレーティングバルブ２５０とを連結する。つまり、第１高圧供給流路１６０は、第２オイルポンプ１５０からポンピングされたオイルを第２レギュレーティングバルブ２５０に供給する。 The third low-pressure supply channel 140 is formed so that the second low-pressure supply channel 120 that bypasses the orifice 130 and the oil that passes through the orifice 130 are integrated. That is, the oil that has passed through the second low-pressure supply channel 120 and the orifice 130 is integrated in the third low-pressure supply channel 140 and supplied to the torque converter 400 and the lubrication unit 450. Further, the third low-pressure supply channel 140 branches to supply oil to the torque converter 400 and the lubrication unit 450, respectively.
The first high pressure supply channel 160 connects the second oil pump 150 and the second regulating valve 250. That is, the first high-pressure supply channel 160 supplies the oil pumped from the second oil pump 150 to the second regulating valve 250.

第２高圧供給流路１７０は、第２レギュレーティングバルブ２５０とパワートレイン３００とを連結する。つまり、第２高圧供給流路１７０は、第２レギュレーティングバルブ２５０を経由したオイルをパワートレイン３００に供給する。また、フィードバックライン１８０は第２高圧供給流路１７０から分岐する。さらに、高圧部３０の油圧が設定値以上に高くなれば、第２高圧供給流路１７０のオイルがフィードバックライン１８０を通して流路切替バルブ１２５に供給されて、流路切替バルブ１２５の作動油圧を形成する。   The second high pressure supply flow path 170 connects the second regulating valve 250 and the power train 300. That is, the second high-pressure supply flow path 170 supplies oil that has passed through the second regulating valve 250 to the power train 300. Further, the feedback line 180 branches from the second high pressure supply flow path 170. Further, if the hydraulic pressure of the high pressure section 30 becomes higher than the set value, the oil in the second high pressure supply flow path 170 is supplied to the flow path switching valve 125 through the feedback line 180 to form the operating hydraulic pressure of the flow path switching valve 125. To do.

図１には、パワートレイン３００に供給される作動圧が設定値より小さい場合、流路切替バルブ１２５が閉鎖された状態を示した。
パワートレイン３００に供給される作動圧が設定値より小さいと、流路切替バルブ１２５は閉鎖され、第１オイルポンプ１００を経由したオイルのうち、オリフィス１３０を通過する最小限のオイルを除いた全てのオイルは、第２オイルポンプ１５０に供給される。したがって、第２オイルポンプ１５０のポンピングによって、高圧部３０の油圧を低圧部２０の油圧に対して優先的に設定値まで上昇させる。 FIG. 1 shows a state where the flow path switching valve 125 is closed when the operating pressure supplied to the power train 300 is smaller than the set value.
When the operating pressure supplied to the power train 300 is smaller than the set value, the flow path switching valve 125 is closed, and all of the oil passing through the first oil pump 100 except the minimum oil passing through the orifice 130 is closed. This oil is supplied to the second oil pump 150. Therefore, the hydraulic pressure of the high pressure section 30 is preferentially increased to the set value with respect to the hydraulic pressure of the low pressure section 20 by the pumping of the second oil pump 150.

図２には、パワートレイン３００に供給される作動圧が設定値以上である場合、流路切替バルブ１２５が開放された状態を示した。
高圧部３０の油圧が低圧部２０の油圧に対して優先的に上昇して、パワートレイン３００に供給される作動圧が設定値以上になると、フィードバックライン１８０を通して流路切替バルブ１２５が開放され、第２低圧供給流路１２０が連結する。つまり、第１オイルポンプ１００を経由したオイルは、第２低圧供給流路１２０及びオリフィス１３０を通して潤滑部４５０及びトルクコンバータ４００に供給される。 FIG. 2 shows a state in which the flow path switching valve 125 is opened when the operating pressure supplied to the power train 300 is equal to or higher than a set value.
When the hydraulic pressure of the high pressure section 30 rises preferentially with respect to the hydraulic pressure of the low pressure section 20 and the operating pressure supplied to the power train 300 exceeds the set value, the flow path switching valve 125 is opened through the feedback line 180, The second low pressure supply channel 120 is connected. That is, the oil that has passed through the first oil pump 100 is supplied to the lubrication unit 450 and the torque converter 400 through the second low-pressure supply channel 120 and the orifice 130.

流路切替バルブ１２５は、バルブ貫通流路１２７及び弾性部材１２９を含む。
バルブ貫通流路１２７は、流路切替バルブ１２５を貫通して形成される。また、バルブ貫通流路１２７の位置が第２低圧供給流路１２０と一致する時、第２低圧供給流路１２０が連通する。さらに、流路切替バルブ１２５は、フィードバックライン１８０を通して油圧の供給を受ければ、その一端が加圧されて移動し、バルブ貫通流路１２７と第２低圧供給流路１２０の位置が一致する位置に移動する。
弾性部材１２９は、流路切替バルブ１２５の他の一端に配設される。つまり、フィードバックライン１８０を通した油圧供給が中断されると、弾性部材１２９の弾性力によって流路切替バルブ１２５が元のバルブ貫通流路１２７と第２低圧供給流路１２０の位置が一致しない位置に戻る。バルブ貫通流路１２７と第２低圧供給流路１２０の位置が一致しないことによって、第２低圧供給流路１２０が遮断される。 The flow path switching valve 125 includes a valve through flow path 127 and an elastic member 129.
The valve through channel 127 is formed through the channel switching valve 125. Further, when the position of the valve penetration channel 127 coincides with the second low-pressure supply channel 120, the second low-pressure supply channel 120 communicates. Further, when the flow path switching valve 125 receives supply of hydraulic pressure through the feedback line 180, one end of the flow path switching valve 125 is pressurized and moved, so that the position of the valve through flow path 127 and the second low pressure supply flow path 120 coincides with each other. Moving.
The elastic member 129 is disposed at the other end of the flow path switching valve 125. That is, when the hydraulic pressure supply through the feedback line 180 is interrupted, the flow path switching valve 125 does not coincide with the position of the original valve through flow path 127 and the second low pressure supply flow path 120 due to the elastic force of the elastic member 129. Return to. Since the positions of the valve through flow path 127 and the second low pressure supply flow path 120 do not match, the second low pressure supply flow path 120 is blocked.

上記のとおり、本発明によれば、高圧部３０の油圧を低圧部２０の油圧に対して優先的に目標油圧に到達させることにより、低圧部２０に油圧を供給することによって発生する高圧部３０の瞬間的な油圧低下を防止することができる。これにより、ブレーキ及びクラッチの耐久性を向上させることができる。   As described above, according to the present invention, the high pressure unit 30 generated by supplying the low pressure unit 20 with the hydraulic pressure by preferentially reaching the target hydraulic pressure with respect to the hydraulic pressure of the low pressure unit 20 according to the present invention. It is possible to prevent an instantaneous hydraulic pressure drop. Thereby, durability of a brake and a clutch can be improved.

１０ 油圧制御装置
２０ 低圧部
３０ 高圧部
１００ 第１オイルポンプ
１１０ 第１低圧供給流路
１２０ 第２低圧供給流路
１２５ 流路切替バルブ
１２７ バルブ貫通流路
１２９ 弾性部材
１３０ オリフィス
１４０ 第３低圧供給流路
１５０ 第２オイルポンプ（Ｐ２）
１６０ 第１高圧供給流路
１７０ 第２高圧供給流路
１８０ フィードバックライン
２００ 第１レギュレーティングバルブ（ＲＥＧ１）
２５０ 第２レギュレーティングバルブ（ＲＥＧ２）
３００ パワートレイン（ＰＴ）
４００ トルクコンバータ（ＴＣ）
４５０ 潤滑部
５００ 可変制御ソレノイドバルブ（Ｌｉｎｅ ＶＦＳ）
６００ オイルタンク DESCRIPTION OF SYMBOLS 10 Hydraulic control apparatus 20 Low pressure part 30 High pressure part 100 1st oil pump 110 1st low pressure supply flow path 120 2nd low pressure supply flow path 125 Flow path switching valve 127 Valve through flow path 129 Elastic member 130 Orifice 140 3rd low pressure supply flow Path 150 Second oil pump (P2)
160 First high-pressure supply flow path 170 Second high-pressure supply flow path 180 Feedback line 200 First regulating valve (REG1)
250 Second regulating valve (REG2)
300 Powertrain (PT)
400 Torque converter (TC)
450 Lubrication unit 500 Variable control solenoid valve (Line VFS)
600 oil tank

Claims (9)

オイルが貯蔵されるオイルタンク、
前記オイルタンクに連結されてオイルの供給を受け、低圧を形成する第１オイルポンプ、
前記第１オイルポンプに連結されて低圧の供給を受け、高圧を形成する第２オイルポンプ、
前記第１オイルポンプから低圧の供給を受けるトルクコンバータ及び潤滑部、
前記第２オイルポンプから高圧の供給を受けるパワートレイン、
前記第１オイルポンプと前記トルクコンバータ及び前記潤滑部との間に介在し、前記トルクコンバータ及び前記潤滑部に選択的にオイルを供給する流路切替バルブ、及び
前記パワートレインに供給される油圧の一部を供給し、前記流路切替バルブを選択的に開閉させるフィードバックライン、
を含み、
前記第１オイルポンプと前記流路切替バルブとの間に介在し、前記トルクコンバータ及び前記潤滑部に供給される作動圧を調節する第１レギュレーティングバルブ、及び
前記第２オイルポンプと前記パワートレインとの間に介在し、前記パワートレインに供給される作動圧を調節する第２レギュレーティングバルブ、
をさらに含むことを特徴とする自動変速機の油圧制御装置。 An oil tank in which the oil is stored,
A first oil pump connected to the oil tank and receiving a supply of oil to form a low pressure;
A second oil pump connected to the first oil pump to receive a low pressure and form a high pressure;
A torque converter and a lubricating part that receive a low-pressure supply from the first oil pump;
A power train receiving a high pressure from the second oil pump;
A flow path switching valve interposed between the first oil pump and the torque converter and the lubrication unit, for selectively supplying oil to the torque converter and the lubrication unit; and a hydraulic pressure supplied to the power train A feedback line for supplying a part and selectively opening and closing the flow path switching valve;
Including
A first regulating valve interposed between the first oil pump and the flow path switching valve to adjust an operating pressure supplied to the torque converter and the lubrication unit;
A second regulating valve that is interposed between the second oil pump and the power train and adjusts an operating pressure supplied to the power train;
Hydraulic control apparatus for an automatic transmission, wherein the further contains Mukoto. 前記第１レギュレーティングバルブ及び前記第２レギュレーティングバルブに制御圧を提供する可変制御ソレノイドバルブをさらに含むことを特徴とする請求項１に記載の自動変速機の油圧制御装置。 The hydraulic control device for an automatic transmission according to claim 1 , further comprising a variable control solenoid valve that provides a control pressure to the first regulating valve and the second regulating valve. 前記第１オイルポンプ及び前記第２オイルポンプは電動式オイルポンプであることを特徴とする請求項１に記載の自動変速機の油圧制御装置。   The hydraulic control apparatus for an automatic transmission according to claim 1, wherein the first oil pump and the second oil pump are electric oil pumps. 前記第１オイルポンプと前記第２オイルポンプとを連結する流路から分岐して、前記第１レギュレーティングバルブに油圧を供給する第１低圧供給流路、
前記第１レギュレーティングバルブを経由したオイルを前記トルクコンバータ及び前記潤滑部に選択的に供給する第２低圧供給流路、
前記第１レギュレーティングバルブを経由したオイルを前記トルクコンバータ及び前記潤滑部に常時供給するオリフィス、
前記第２低圧供給流路及び前記オリフィスを経由したオイルが統合されて、前記トルクコンバータ及び前記潤滑部に供給するように形成された第３低圧供給流路、
前記第２オイルポンプからポンピングされたオイルを前記第２レギュレーティングバルブに供給する第１高圧供給流路、及び
前記第２レギュレーティングバルブを経由したオイルを前記パワートレインに供給する第２高圧供給流路、
をさらに含むことを特徴とする請求項１に記載の自動変速機の油圧制御装置。 A first low-pressure supply passage that branches off from a passage connecting the first oil pump and the second oil pump and supplies hydraulic pressure to the first regulating valve;
A second low-pressure supply passage for selectively supplying oil via the first regulating valve to the torque converter and the lubrication unit;
An orifice that constantly supplies oil via the first regulating valve to the torque converter and the lubrication part;
A third low-pressure supply channel formed so that oil passing through the second low-pressure supply channel and the orifice is integrated and supplied to the torque converter and the lubrication unit;
A first high-pressure supply flow path for supplying oil pumped from the second oil pump to the second regulating valve; and a second high-pressure supply flow for supplying oil via the second regulating valve to the power train Road,
The hydraulic control device for an automatic transmission according to claim 1, further comprising: 前記第２低圧供給流路は前記オリフィスを迂回することを特徴とする請求項４に記載の自動変速機の油圧制御装置。 5. The hydraulic control device for an automatic transmission according to claim 4 , wherein the second low-pressure supply flow path bypasses the orifice. 前記流路切替バルブは、前記第２低圧供給流路上に備えられたことを特徴とする請求項４に記載の自動変速機の油圧制御装置。 The hydraulic control device for an automatic transmission according to claim 4 , wherein the flow path switching valve is provided on the second low-pressure supply flow path. 前記第２低圧供給流路は、前記流路切替バルブの開閉によって選択的に連結されることを特徴とする請求項６に記載の自動変速機の油圧制御装置。 The hydraulic control device for an automatic transmission according to claim 6 , wherein the second low-pressure supply flow path is selectively connected by opening and closing the flow path switching valve. フィードバックラインは、前記第２高圧供給流路から分岐されて前記流路切替バルブと連結されたことを特徴とする請求項４に記載の自動変速機の油圧制御装置。 Off I over-back line, the hydraulic control device for the automatic transmission according to claim 4, characterized in that is branched from the second high pressure supply passage is connected to the flow switching valve. 前記パワートレインに供給される作動圧が設定値以上である場合、作動圧の一部は、フィードバックラインを通して前記パワートレインに供給され、前記流路切替バルブが開放されることを特徴とする請求項１に記載の自動変速機の油圧制御装置。
If the operating pressure supplied to the power train is equal to or greater than a set value, a part of the operating pressure is supplied to the power train through a full I over-back line, wherein said flow path switching valve is characterized in that it is opened Item 2. The hydraulic control device for an automatic transmission according to Item 1.
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